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Article Dans Une Revue Journal of Physics: Condensed Matter Année : 2009

Thermophoresis at a charged surface: the role of hydrodynamic slip

Résumé

By matching boundary layer hydrodynamics with slippage to the force-free flow at larger distances, we obtain the thermophoretic mobility of charged particles as a function of the Navier slip length b. A moderate value of b augments Ruckenstein's result by a term 2b/λ where λ is the Debye length. If b exceeds the particle size a, the enhancement coefficient a/λ is independent of b but proportional to the particle size. Similar effects occur for transport driven by a salinity gradient or by an electric field.
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Dates et versions

hal-00340774 , version 1 (22-11-2008)

Identifiants

Citer

Julien Morthomas, Alois Würger. Thermophoresis at a charged surface: the role of hydrodynamic slip. Journal of Physics: Condensed Matter, 2009, 21 (3), pp.035103. ⟨10.1088/0953-8984/21/3/035103⟩. ⟨hal-00340774⟩

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